Lydfors



June 12, 1951 J. LYDFORS SELECTIVELY OPERABLE SH IFTABLE TOTALIZER ARRANGEMENT 2 Sheets-Sheen: 1

Filed Jan. 20, 1948 INVENTOR. Jo n Zydfons BY W1 June 12, 1951 Filed Jan. 20, 1948 J. LYDFORS 2556.762 SELECTIVELY OPERABLE SHIFTABLE TOTALIZER ARRANGEMENT INVENTOR. Jam lydfom' BY A W, {4 C4 'ing provided with the read-in pins 6.

Patented June 12, 1951 SELECTIVELY OPERABLE SHIFIABLE TOTALIZER ARRANGEMENT :I'ohn Lydfors, Eket, Sweden, assignor to "Aktiebolaget Dixma, Malmo, Sweden Application January 20, 1948, Serial No. 3,358 In Sweden October 12, 1946 Section -1, Public Law 690, August 8, 1946 Patent expires October 12, 1.966

7 3 Claims. 1

The present invention refers to an arrangement in calculating machines and the like comprising two or more calculating mechanisms. The object of the invention is to provide a calculating machine, wherein one of the calculating mechanisms is adapted by a single shift selectively to operate as a quotient register and as an accumulator. In the latter case the result is introduced directly into the accumulator through a result mechanism. The invention is principally distinguished by the feature that two or more calculating mechanisms are adapted to cooperate with a common device for tens transfer.

The accompanying drawings illustrate an embodiment of the invention, wherein a result calculating mechanism may be caused to cooperate with a combined accumulator and quotient register. Fig. 1 shows the members in asection at right ,angles to the shafts of the calculating mechanism. Fig. v2 is a partly cut front view of the same members.

The calculating mechanisms are arranged between two rigidly arranged frame walls I and 2 (Fig. 2), the wall I constituting the left-hand head wall and '2 the right-hand head wall of the mechanism. The shafts of a result mechanism A are mounted in these walls in a manner known per se. Furthermore, a shaft 3 is mounted at the end portions thereof in these walls, said shaft constituting a rotary shaft for the combined accumulator and quotient register B, the shafts of which are mounted in two wall sections 4 and '5 parallelling the frame walls and rotatable about "the-shaft 3.

Fig. 1 shows a rotor of the result mechanism formed in a'manner known'per se, said rotor 'be- The adjustment of the latter from an inoperative into an oper'taive position may be effected in any suitable manner and has no bearing on the inventive idea. Said read-in pins cooperate during the rotary movement of the rotor with a gear wheel 1. The number of pins 6 as well as the gear wheel 1 which are provided in the machine is in accordance with the capacity of the machine. This is also the case with the other members shown. In the following, only the members for one order are considered. The gear wheel 7 is rotatable about a shaft 8. This shaft may either be fixedly -mounted or arranged to be displaced by a translatory movement, so that the gear wheel .1 can be brought out ofand into the path of the read-in pins 6. However, the gear wheel 1 is in a constant drivin connection with a gear wheel 9 arranged as a sun wheel, which is mounted on a shaft 10. Functioning as a planet wheel to said sun wheel is a gear wheel H which, while being rotatably arranged on a shaft journal [2, is secured in an arm l3 .swingable about the shaft Ill. The outer end portion of said arm forms a tooth l4 cooperating with a positioning and locking arm 16 mounted on a shaft l5, so that the arm, and thus the planet wheel, may take two fixed positions. A spring I! tends to turn the locking arm in a counter-clockwise direction. The planet wheel carrier, that is to say the arm 13, is formed near its bearing shaft l0 with two lugs l8 and 19 adapted to cooperate each with one tens transfer cam 20 and 2| respectively. The cam 20 is connected with a calculating wheel 22, while the cam 21 is arranged on a calculating wheel 23. Shafts 2 4 and '25 of these wheels are mounted in a cradle device '26, in a manner such that the gear wheels may be alternately brought into driving connection with the sun wheel 9, these gear wheels thus actuating the arm 13 with their transfer cams 20 and 2|, for the purpose of Shifting the arm l3 by an angle in a clockwise direction from the position shown. According to the example, the calculating wheel 22 is shown in its operative position, the transfer cam 2|] at the rotary movement-of the wheel displacing the lug 18 011 the arm -'l-3 outof the path of said cam. The calculating wheels 22 and 23 are intended to be brought intoanloperative position, .one for positive and the other for negative calculating operations.

In the position shown in Fig. 1, the arm [3 is about to be shifted from the position shown to locking engagement with the locking arm IS, the teeth of the planet wheel I I being then moved into the path of a transfer tooth 28 on a transfer drum 29. This drum is mounted on a shaft 30 and adapted to rotate in synchronism with the drum or rotor carrying the read-in pins 6. After the transfer tooth has been brought into engagement with a tooth on the planet wheel Ii, and has entrained this wheel by a tooth pitch, so that the sun wheel has also been advanced by one step so as to cause atens transfer in the calculating mechanism 22 and 23 respectively, the arm i3 is returned into the initial position by cooperating with one of two lugs 3| arranged diametrically relatively to eachother on a hub portion 32 rigidly connected with the transfer drum :29 and a pin 33 on the arm 13. Prior to the return movement, the other lug 3| actuates the locking arm l6 and moves the latter into a position in which the tooth i4 is released. A positioning member 31 constitutes the end portion of an arm 33,

which is swingable about a shaft 39 and adapted to bear on the teeth of the sun wheel under the influence of a spring 40. For the purpose of reading the calculating mechanism,'the calculating wheels 23 are provided with indicators 23', which always indicate the correct result, inasmuch as the two calculating wheels 22 and 23 are in mesh with one another.

The combined accumulator and quotient register B is built broadly on the same principle as the result calculating mechanism A. The most conspicuous difference resides in that the calculating mechanism B is in its entirety swingable about the shaft 3, as stated hereinabove, for the purpose of securing a tooth engagement between the planet wheel ll of the result mech anism and a gear wheel 43 operating as a sun wheel in the mechanism B, in correspondence with the sun wheel 9 of the mechanism A. This wheel 43 is mounted on a shaft 44 and cooperates with a positioning arm 45, which is swingable about a shaft 46. The Wheel 43 is always in mesh with one of two mutually coupled calculating wheels 41 and 48, the shafts 49 and 50 of which are mounted'in a cradle device i. The latter is swingable about a shaft (not shown), which is in turn mounted in the wall sections 4 and c swingable about the shaft 3, said wall sections also carrying the shafts 44 and 46. According to the example, the calculating wheel 47 is adapted to enter into tooth engagement with the wheel 43 at a positive calculating operation, while the calculating wheel 48 is operated in the same manner, at a negative operation. According to Fig. 1, the calculating wheel 48 is shown in en gagement With the sun wheel 43. The calculating wheel 41 is provided with an indicator 52, and both calculating wheels are provided with transfer cams 53 and 54, respectively, which are adapted to cooperate with lugs 55 and 56, respectively, on a transfer arm 51 swingable about the shaft 44. A planet wheel 58 mounted on a pin 59 on said transfer arm 51 is in constant engagement with the wheel 43 and adapted at the shift ing of the transfer arm 5l-by means of the cams 53 and 54 of the respective calculating wheels to be moved into operative position for the transfer tooth 28 on the above-named transfer drum 29. The tens transfer consequently takes place, in principle, in the same manner as in the calculating mechanism A. The transfer arm 5'7 is kept in its operative or inoperative position by means of a combined positioning and locking arm 66, which is swingable about a shaft 6| and actuated by a spring 62.

In the position shown for the planet wheel 58, the latter cooperates with two mutually diametrical quotient teeth 63 on a rotor 64, which is driven by means of a shaft 65 mounted in the frame walls i and 2. Here, the calculating mechanism 41, 48 operates as a quotient register with a complete tens transfer. The returning of the transfer arm 51 from the position to which it is shifted by means of one of the cams of the calculating wheels 41 and 48, and in which position the planet wheel 58 is actuated by the transfer teeth 28, back into the position shown in the drawing is effected with the aid of the same cam members, which return the transfer arm IS in the result mechanism A, that is to say the cams 3| on the hub portion 32 of the transfer drum 29, which cams are thus caused to enter into engagement with a pin 66 on the outer end of the transfer arm. Just prior to such return, however, the locking arm 60 will have to be moved into inoperative position, which is effected with the aid of two diametrically opposed cams 61 on the hub 32, which cams are thus caused to enter into engagement with a tongue 68 on the arm 60. As will appear from the calculating mechanism described, the transfer drum 29 and the quotient rotor 64 are intended to become operative twice per revolution, which is obvious from the doubled and mutually by displaced members on said parts.

Normally, the mechanism B functions as a quotient register. On the other hand, said mechanism may any time be caused to function as an accumulator, by swinging the mechanism about the shaft 3, so that the sun wheel 43 enters into tooth engagement with the planet wheel ll of the result mechanism A. The planet wheel 58 is then moved out of the path of the quotient tooth 63, while the other functions of the mechanism B remain unchanged. Thus the mechanism B still operates with a complete tens transfer through its connection with the transfer drum 29 common to both mechanisms. When the result mechanism A is zeroised, the result may be introduced into the mechanism B through said mutual coupling of the two mechanisms. During this process, the transfer arms l3 are locked in the mechanism A, which is effected with the aid of an eccentric contrivance which, according to the example shovgn, is constituted by a semicylindrical portion 69 of a rotatably mounted shaft, which portion may be adjusted into looking position for a tongue 10 on the transfer arm It.

It should be obvious that, since the two mechanisms are adapted to be coupled to each other, facilities are provided for the simultaneous introduction of an amount into both mechanisms and not only for an introduction into the mechanism B at zeroising of the mechanism A, as indicated above. Finally, it should be pointed out that the mechanism B can be mounted swingably otherwise than above described, for instance with the aid of guides, toothed racks and the like.

Iclaim:

1. In a calculating machine, the combination with a first fixed totalizer, having an actuator drum associated therewith, of a second totalizer, of a ten-carry mechanism and of a rotor with actuating lugs for revolution counting, the second totalizer being movable to and from positions where it co-operates either with said first totalizer or with said rotor, a set of transmitting means for ten-carrying in the first totalizer, a set of transmitting means for tencarrying in the second totalizer, said two sets of transmitting means co-operating with said tencarry mechanism. V

2. The combination claimed in claim 1, wherein said transmitting means for ten-carrying for each totalizer comprises a spur gearing selectively meshing with the ten-carry mechanism, the first totalizer having a second spur gearing selectively meshing with said actuator drum, and the second totalizer being movable from an inoperative position to an operative position of engagement with said spur gearing of the first totalizer.

3. The combination claimed in claim 2 wherein the spur gearing of the second totalizer is movable between positions of engagement respectively with said rotor for revolution counting and with said ten-carry mechanism.

JOHN LYDFO-RS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,008,079 Schuster Nov. 7, 1911 1,100,631 Trinks June 16, 1911 1,150,997 Carroll Aug. 24, 1915 1,400,106 Trinks Dec. 13, 1921 Number Number 15 586,386

Name Date Pentecost et a1. Oct. 31, 1922 Horton Apr. 12, 1932 Wheelbarger Apr. 12, 1932 Wernecke May 30, 1933 Hellgren July 16, 1935 Overbury Dec. 7, 1937 Butler Nov. 19, 1940 Avery Nov. 19, 1940 Christie Apr. 1 1, 19 12 Friden June 9, 1942 FOREIGN PATENTS Country Date Germany Oct. 20, 1933 

